Administrator of



(No Model.)

W. L. MAGEE, new.

R. N. MAGEE, Administrator.

NUT LOOK.

- Patented Jan. 12, 1892. @2y

UNITED STATES PATENT OFFICE.

RICHARD NEEDI-IAM MAGEE, OF GOLDEN, TEXAS, ,ADMINISTRATORDF WVILLIAMLEONARD MAGEE, DECEASED.

' NUT-LOCK.

SPECIFICATION forming part of Letters Patent N 0. 466,793, dated January12, 1892.

Application filed July 23, 1891. Serial No. 100,427. (No model.)

To all whom it may concern:

Be it known that I, RTOHARD NEEDHAM MAGEE, a citizen of the UnitedStates, residing at Golden, in the county of \V00d,in the State ofTexas, (administrator of the estate of WIL- LIAM LEONARD MAGEE,deceased,) represent that the said XVILLIAM L. MAGEE did invent a newand useful Improvement in Nut-Locks, of which the following is aspecification.

This invention relates to certain new and useful improvements innut-locks of that class wherein a ratchet and pawl is employed toprevent retrograde movement of the nut after it has once been turned upinto the de' sired position.

The invention has for its objects, among others, to provide an improvednut-lock of this character which shall be simple, durable, cheap, andefficient, and in which the ratchet and pawl shall be so protected orcovered as to guard them against iuj ury or dust and dirt. and toprovide a casing within which the pawl is arranged, the said pawl beingacted upon by a spring arranged within the case and the pawl being soarranged that aportion thereof shall be accessible from the outside ofthe case, whereby it may be actuated to disengage the pawl from theratchet and thus permit of the removal of the nut when desired. The nutis formed with an interior thread to engage the threads of the bolt andwith an inwardly-extending boss provided with ratchet-face and a collarto limit its inward movement, and upon the other side of the collar itis provided with a squared or other shaped portion to receive a wrenchor other instrument, whereby itmaybe turned. The casing is formed withprojecting pins or points de signed to engage depressions or holes inthe face-plate or to embed themselves into the wood in case they areemployed in connection with a wooden plate or strip.

Other objects and ad vantages of the invention will hereinafter appear,and the novel features thereof will be specifically defined by theappended claim.

The invention is clearly illustrated in the accompanying drawings,which, with the letters of reference marked thereon, form apart of thisspecification, and in which- Figure 1 is a perspective view showing theinvention with a portion of the case broken away. Fig. 2 is aperspective view of the different parts of theinvention shown detached,but in their relative positions. Fig. 3 is a cross-section taken throughthe pivot of the pawl diagonally across the case.

Likeletters of reference indicatelilIe parts throughout the severalviews in which they occur.

Referring 110w to the details of the drawings by letter, A designatesthe rail of known construction, and B is a bolt passed through anopening therein and provided with screwthreads a, as shown. Fish-platesmaybe employed, if desired, or they may be omitted.

C is the case, which is provided with a flanged portion 1), which ispreferably provided upon the face which comes next the rail with prongsor projections or analogous provisions c, as seen, which are designed toenter depressions in the fish-plates when such are employed, or intolike depressions in the rail when fish-plates are not used. If woodenplates are used,the prongs orprojections will embed themselves thereinas the parts are screwed up. The case is substantially-square and has anopening at the rearside, as shown at d, for the passage of the bolt, andat its outer face provided with a larger opening 6 for the insertion ofthe nut. The nut E is formed with a central screw-threaded openingf andwith a collar or flange g. Outside this collar or flange there isasquare or other shaped portion 71, designed to receive a wrench orother tool by which it may be turned, and upon the other or inner sideof this collar or flange there is a round portion j, which is providedwith teeth 7a to form a ratchet with which the pawl engages. The pawlFis pivoted within the case at one corner on a pivot Z, with theengaging end of the pawl so arranged as to engage the ratchet of thenut, the other arm of the pawl forming one side of the case, as shown.The arm of the pawl forming the side of the case is acted upon by aspring G, which is confined within the case in any suitable manner, asby the pins m, which serve also to strengthen the case.

The operation will be apparent.

The bOlt IOO then applied.

is passed through the hole in the rail. The case is then slipped overthe bolt and the nut The nut is screwed onto the bolt, the pawlpermitting this being done; but the spring pressing upon the arm of thepawl holds it in engagement with the ratchet and prevents retrogrademovement of the nut. \Vhen it is desired to remove the nut, the arm ofthe pawl is pressed inward against the action of the springwhichdisengaged the pawl end from the ratchet. It will be seen that a doublemeans of holding the nut is employed (the screw thread engagement)between the nut and bolt and the ratchet and pawl mechanism, thusforming avery etficient hold upon the nut against loosening.

The parts are readily assembled, cheap of n'lanufacture, not liable toget out of order, and in practice have proved most efficient for thepurpose for which they are designed.

What is claimed as new is The combination, with the case having aflanged portion provided with projections and bolt-opening and chamberfor the pawl and its spring, of the nut formed with centralscrew-threaded opening, a flange, a polygonal portion upon one side ofsaid flange and a toothed circular portion upon the other side of saidflange, the pawl pivoted within the case with its inner end arranged toengage the ratchet and the other arm forming one side of the case and aspring confined within the case held upon one end upon a pin and theother end bearing on the pawl near its pivot, substantially asdescribed.

In testimony whereof I have hereunto signed my name in full inthepresence of two witnesses.

, RICHARD NEEDHAM MAGEE, Administrator of l Villictm Leonard lllagee,

deceased. .VVitnesses:

JAS. MCLESTER, G. W. CoWAN.

